The proclamation was military document that only applied to states that had seceded from the Union. It also left slavery untouched in the border states.
Furthermore, any measure of its enforcement relied on Union military success.
He had previously tried to convince the border states to accept gradual emancipation which would’ve included compensation for slave owners, but they turned it down.
Over 200,000 would go on to serve in the army & navy throughout the remainder of the Civil War.
The truth is that abolitionists had been fighting for this for decades. Frederick Douglass & others played an instrumental role in pushing Lincoln.
amazon.com/Fiery-Trial-Ab…
When he was a young attorney he worked on a case in which he returned an enslaved mother & her children to their master. He also worked on a case where he freed a different enslaved woman.
But only for them, didn’t believe in full-scale black enfranchisement.
His views on race were far from perfect, still worth considering where he would’ve ended up if he hadn’t been assassinated.